Little Johnny felt the bag，curious to know what it ______.
| A．collected | B．contained | C．loaded | D．saved |
— The room is dirty.
— I know. It ______ for several weeks.
| A．hasn’t cleaned | B．didn’t clean | C．wasn’t cleaned | D．hasn’t been cleaned |
I don’t expect the children to be noisy, nor ________ them to be quiet.
| A．I expect | B．do I expect | C．I have expected | D．have I expected |
It’s difficult to ___ these old books for some of them ______ none of the classification.
| A．look for; are belonging to | B．put up; belong |
| C．sort out; belong to | D．pick up; are belonged to |
Many kinds of animals and plants die _________ every year.
| A．down | B．away | C．out | D．from |
We should do something to _______ the plant ______ the cold weather.
| A．protect; from | B．prevent; from | C．protection; from | D．prevent; against |